package com.hmdp.service.impl;

import cn.hutool.core.util.StrUtil;
import cn.hutool.json.JSONUtil;
import com.hmdp.dto.Result;
import com.hmdp.entity.ShopType;
import com.hmdp.mapper.ShopTypeMapper;
import com.hmdp.service.IShopTypeService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.ArrayList;
import java.util.List;

import static com.hmdp.utils.RedisConstants.CACHE_SHOP_TYPE_KEY;

/**
 * <p>
 *  服务实现类
 * </p>
 *
 * @author 虎哥
 * @since 2021-12-22
 */
@Service
public class ShopTypeServiceImpl extends ServiceImpl<ShopTypeMapper, ShopType> implements IShopTypeService {

    @Resource
    private StringRedisTemplate stringRedisTemplate;

    @Override
    public Result qlist() {
        String key = CACHE_SHOP_TYPE_KEY;
        List<String> jsonList = stringRedisTemplate.opsForList().range(key,-0,-1);
        List<ShopType> typelist = new ArrayList<>();
        if(jsonList != null && !jsonList.isEmpty()){
            for (String s : jsonList) {
                typelist.add(JSONUtil.toBean(s, ShopType.class));
            }
            return Result.ok(typelist);
        }
        typelist = list();
        if (typelist == null ) {
            return Result.fail("出现错误！");
        }
        for (ShopType shopType : typelist) {
            stringRedisTemplate.opsForList().leftPush(key, JSONUtil.toJsonStr(shopType));
        }
        return Result.ok(typelist);
    }
}
